Dream incubation is the practice of provoking a dream at will, with the aim of extracting information that will help solve a problem. Our ancestors turned to it for advice before making important decisions, when searching for healing from illnesses or consolation in the face of life's adversities. For a millennia, this technique has been used in many cultures and civilizations around the planet. Sumerians, Egyptians, Hittites, Greeks, Romans, Celts, Hebrews, Muslims and Christians adapted the incubation of dreams to their own idiosyncrasies still maintaining a common basic set of procedures that have survived intact to this day. Enrique Ramos, researcher of the world of dreams and states of consciousness in humans, invites you to discover the history of this ancient tradition through the pages of this book. Is there evidence for the incubation of dreams in prehistory? Where did the Egyptians practice it? How did the incubation in the Celtic world arise? How were Greco-Roman shrines organized to celebrate such sacred rites? Why, for several centuries, did the Church allow this pagan tradition to be practiced in its temples? What places in Spain were related to the incubation of dreams? All these and many other questions are addressed in this work. Also, in the last section of the book, the author offers detailed guidelines to apply this timeless technique in the modern world.